Receptacle closure



Dee. "711926.

R. A. RUSSELL RECEPTACLE CLOSURE Filed Jan. l5, 1923 INVENTOR m G M 1;ATTORNEKS HHKHIIHHHI m w Patented Dee. 7, 1926. I

UNITED l STATES ROBERT A. RUSSELL, or Rinenwoon, NEW JERSEY, AssIGNOR ToPARAGON CAN &i

PATENT OFFICE.

CAP COMPANY, me., OE PATERsON, NEW JERSEY, A CORPORATION OE NEW YORK.

RECEPTACLE CLOSURE.

Application filed JanuaryA 13, 1923. Serial No. 612.387.

This invention relates to a receptacle closure and, more particularly,to aso called screw cap for bottles and jars, such for instance, as acatsup bottle. i

An object of the invention is to provide such an article which isdesigned to engage threads formed on the inside of the neck'of thereceptacle, and which includeseffective means for establishing asubstantially perfect sealing engagement between the closuie and thereceptacle.

Another'object. consists in providing suoli a device which may becheaply and expeditiously manufactured and which will be sightly inappearance. l

A further object consists in providing c ertain improvements in theform, construction and arrangement of the several parts whereby theabove named and other objects may be effectively attained.

Receptacle closures which are provided with threads designed to matewith threads formed on the inside of the .neck or mouth of thereceptacle have been .provided with rings or washers of cork, rubbercomposition or other yielding material, such rings or washers beingarranged to lie between the top edge of the receptacle neck or mouth anda shoulder or flangeformed on the closure, so that the rings or washerswould be compressed upon the receptacle in an axial direction, when thecap or closure was in position thereon. This construction has not provedentirely satisfactoryfrom the point of view of effecting a completeseal, largely because there was nothing comparable to a wedging actionin the application of the closure to the receptacle, and also because ofthe difficulty of acting uponl the discs or washers with sufficientforce to thoroughly accomplish the desired result.

Furthermore, it frequently happens that glass receptacles, such ascatsup bottles, have minute cracks or fissures existing at the lip Orextreme edge of the neck of the receptacle, as a result of the processof manufacturing the receptacle. These cracks or fissures commonlyextend inwardly about one-eighth of an inch, considered in the directionof the height of the receptacle, and permit a certain amount of leakagethrough the part of the receptacle where they occur.

It will be clear that a ring or washer which presses only upon the outeredge of the receptacle will not serve to close these cracks or fissuresand will not, therefore, accomplish an. effective seal.

Vith thesewell known disadvantages in mind I have devised the presentinvention, a practical embodiment of which is represented in theaccompanying drawings, in which- Fig. 1 represents a detail elevation,partly in section, showing my improved closure applied to the neck of abottle.

Fig. 2 represents a detail elevation, partly broken away showing theclosure by itself.

The closure is preferably composed of sheet metal,ksuch as sheet' ironwhich has been coated with tin and lacquered, and consists of an uppermember 1 and a lower member 2. The upper member isl formed substantiallyin the shape of a flat cylinder and can readily be drawn from a blank ofsheet metal by a die operation, in a manner well understood in the art.l v

The lower member 2 of the closure includes a flange 3 which isinterlocked with the upper member 1 by means of a folded seam 4.Thisnseam is of conventional character and may be formed by a dieingoperation which is familiar to all those skilled in this industry.

vThe member 2 also includes a portion which is denoted by 5 and issubstantially in the shape of a truncated cone, or, so to speak,tapered. This portion 5 intervenes between the flange 3 and a threadedportion 6 at the lower part of the member 2.

In manufacturing the member 2, it may be drawn by a suitable dieOperation, with the flange 3 projecting straight out laterally and withthe portion 6 substantially cylindrical in form. After the member 2 hasbeen thus formed, the portion 6 is suitably threaded by passing itbetween the well known threading rollers, and the flange 3 is bent intointerlocking engagement with the member 1, as previously described.

The seam l not only serves to firmly unite 100 the members 1 and 2, butit constitutes a beading which improves th-e appearance of the closureand strengthens or reinforces the flange 3.

A ring or washer 7, of suitable compressible material, such as rubbercompound, is fitted on the tapered portion 5 of the member 2. Thiswasher 7 will normally be held in place by its frictional grip upon theportion 5, as indicated in Fig. 2.

The outside diameter of the tapered portion 5 is made less than theinside diameter of the neck of the receptacle at its mouth, and theoutside diameter of the washer 7 is made greater than the diameter ofthe said portion of the receptacle, so that when the closure is appliedto the receptacle, denoted by 8, by screwing it therein, the washer orring 7 enters for some distance inside of the neck of the receptacle 8so as to be clamped between the said inside portion of the neck and thetapered portion 5 of the member 2. i/finother part of the washer 'l'rests upon the top edge of the neck of the receptacle. 8 and is clampedthereupon by the liange 33. This condition of the washer is clearlyshown in Fig. l.

lhus the washer not only bears upon the Vportions of the receptacle justmentioned in order efl'ectively to seal any cracks or fissures and tocover any irregularities in the material of which the receptacle iscomposed, but the said washer is forced into place by a wedging actionsimilar to that which occurs when an ordinary cork -is forced intoV theneck of a bottle, so that a most complete and perfect sealing engagementis established.

For convenience in manual operation of the closure, it is preferablyprovided with a knurling 9, which can be done at the same time that theportion 6 is being threaded, as is well known by operatives in 'thisindustry.

It will be clear that the members l and 2 of the closure may be formedin ways other than that hereinabove described1 and that 1t Vmay bedesirable to subject it to an addil do not intend to be limited to thedetails herein shown and described, except as they may be included inthe claim.

W'hatl claim is A sheet metal receptacle closure comprising, an upperclosure member, a lower closure member seamedv to said upper closuremember` andvincluding, a lateral shoulder adjacent said seam, a portionadjacent theV bottom of said lower closure memberv constituting meansfor engaging the interior of the receptacle, a tapering portion betweensaid lateral 'shoulder'and said receptacle engaging portion, and acompressible element surrounding said tapering portion and adapted to bepressedV between saidshoulder and said tapering portion on `the closureand the top and inner wall of the receptacle when the closure is movedtoward thereceptacle, thereby forming a seal.

n testimony, that I claim the foregoing as my invention, I have signedmy name this twelfth day of January, 1923;

` ROBERT A; RUSSELL.

toY

